I have all the extra stuff and tried to use the downloader to get the game it made it to 500mb and went offline. The other thread on this says solved but it didnt say how?

it's a problem with the gog downloader, see this thread:
http://www.gog.com/en/forum/general/introducing_the_new_gog_downloader_wip/page11

if you just use the old style of downloading (so just html download), it will work. (with the risks involved ofc of downloading such a large file at once with no chance to correct stuff that went wrong)

That annoys me as well I haven't even been able to begin downloading as the GOGdownloader won't open properly and the first manual download file is corrupted. I know I'm running windows 7 but even with administrative clearances and compatibility it don't work.

Now the game is downloaded with the GOGdownloader but I'm having a supposed install problem because when i try to launch the game I get a system error saying The program can't start because d3dx9_35.dl is missing from your computer. Try reinstalling the program to fix this problem. But when I do that i still get the same witcher.exe system error!